Eur. Phys. J. Appl. Phys.
Volume 44, Number 2, November 2008
|Page(s)||205 - 209|
|Section||Instrumentation and Metrology|
|Published online||17 July 2008|
Analog set-up for non linear dielectric measurements up to 100 kHz
Institut Universitaire de Technologie, 19 rue L. David, BP 689, 62228 Calais Cedex, France
2 LEMCEL, 50 rue F. Buisson, BP 717, 62228 Calais Cedex, France
3 Military University of Technology, Kaliskiego 2, 00-908 Warszawa, Poland
Accepted: 30 May 2008
Published online: 17 July 2008
In this paper, we present a new analog set-up for non linear dielectric measurements. The device is based on the auto-balanced bridge principle used in impedance analyzers. Its main advantage is to operate at high frequencies in comparison with a classical current amplifier. This extension consists in extracting the harmonics of a non sinusoidal current crossing the material. The set-up is used to perform non linear dielectric measurements on a ferroelectric liquid crystal and shows better performances than a previously published digital set-up.
PACS: 84.30.-r – Electronic circuits / 84.37.+q – Measurements in electric variables / 07.50.-e – Electrical and electronic instruments and components
© EDP Sciences, 2008
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